$_getN<T> method
For generated code only.
Implementation
T $_getN<T>(int index) {
// The implicit downcast at the return is always correct by construction
// from the protoc generator. dart2js will omit the implicit downcast when
// compiling with `-O3` or higher. We should introduce some way to
// communicate that the downcast cannot fail to the other compilers.
//
// TODO(sra): With NNDB we will need to add 'as T', and a dart2js annotation
// (to be implemented) to omit the 'as' check.
return _fieldSet._$getND(index);
}